-1=-u-9/3

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Solution for -1=-u-9/3 equation: 



-1=-u-9/3

We move all terms to the left:

-1-(-u-9/3)=0

We add all the numbers together, and all the variables

-(-1u-3)-1=0

We get rid of parentheses

1u+3-1=0

We add all the numbers together, and all the variables

u+2=0

We move all terms containing u to the left, all other terms to the right

u=-2

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